Edelbrock part #29275 Super Victor BBC EFI intake manifold is designed for Chevy big-blocks with rectangular port cylinder heads. It features a single-plane design that is ideal for 500+ cubic-inches or any big-block drag race engine with high air flow requirements. In dyno testing, Super Victor #29275 EFI outperformed the competition out-of-the-box with just a port match and minor blending of critical surfaces.